WBUR host Tom Ashbrook, the voice of the popular nationally syndicated public radio show “On Point,” has been placed on leave because of allegations made against him, according to WBUR general manager Charles Kravetz.

“Yesterday, Boston University and WBUR received some allegations against Tom Ashbrook,” Kravetz said, reading from a statement. “Tom will be on leave from his duties at WBUR while an outside organization hired by Boston University examines these allegations. We will decide a course of action after getting the results of this investigation.”

Kravetz did not specify the nature of the allegations, or who made them.